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Digital Electronics

Digital Electronics
ASCII code is a

 5-bit code
 8-bit code
 10-bit code
 7-bit code

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Digital Electronics
A combinational circuit can be designed using only

 OR and X-NOR gates
 NOR gates
 OR gates
 AND gates

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Digital Electronics
The voltages corresponding to LOW and HIGH levels respectively are given below. Identify the voltages which correspond to negative logic system.

 –1.5 V and – 0.5 V
 0 V and 5 V
 5 V and 0 V
 1 V and 5 V

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Digital Electronics
If a counter having 10 flip flops is initially at 0, What count will if hold after 2060 pulses?

 000 001 1100.
 000 000 1110.
  000 000 1100.
  000 000 1000.

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Digital Electronics
The NOR gate can function as a NOT gate if

 one input is set to 1
 one input is set to 0
 all inputs are connected together
 inputs are left open

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Digital Electronics
(44)8 in BCD 8421 code is

 00100100
 01100011
 01000100
 00110110

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